package com.swotxu.mall.order.conf;

import feign.RequestInterceptor;
import feign.RequestTemplate;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@Configuration
public class MallFeignConfig {

    @Bean("requestInterceptor")
    public RequestInterceptor requestInterceptor() {
        return this::apply;
    }

    public void apply(RequestTemplate template) {
        //1、RequestContextHolder拿到刚进来的这个请求
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        if (attributes != null) {
            log.info("RequestInterceptor线程Id[{}]", Thread.currentThread().getId());
            HttpServletRequest request = attributes.getRequest(); //老请求
            //同步请求头数据，Cookie
            String cookie = request.getHeader("Cookie");
            //给新请求同步了老请求的cookie
            template.header("Cookie", cookie);
        }
    }
}
